如何在php中阅读多个Docx

I want to read multiple docx files in one page in php.

<?php
function read($filename)
{
for($i=0;$i<2;$i++){
$striped_content = '';
        $content = '';

        $zip = zip_open($filename);

        if (!$zip || is_numeric($zip)) return false;

        while ($zip_entry = zip_read($zip)) {

            if (zip_entry_open($zip, $zip_entry) == FALSE) continue;

            if (zip_entry_name($zip_entry) != "word/document.xml") continue;

            $content .= zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));

            zip_entry_close($zip_entry);
        }// end while

        zip_close($zip);

        $content = str_replace('</w:r></w:p></w:tc><w:tc>', " ", $content);
        $content = str_replace('</w:r></w:p>', "
", $content);
        $striped_content = strip_tags($content);

        $output = array();

        $output['original'] = $striped_content;
    }   

}

but I still get an error here?